Well you raise an interesting question, in my mind anyway. Would Menards, or any other big box, really hold all of those particular boards hostage at the current price? I would guess not, that they are free to lower the price on those at any time, if demand is low, or cheaper replacement inventory is already on the way. It's not like if you took the last one of those 2000 2x6s, and then grabbed a new one from the next batch, that they would ring up at different prices at the register. The price is set per day regardless of what exact pieces of inventory are on hand... right?